Hand seamer for cans



A. L. KRONQUEST HAND SEAMER FOR CANS Dec. 1o, 1935,

Filed Sept. 2l, 1953 6 Sheets-Sheet l 4.a, @RTA Dec. l0, 1935o A. L.KRONQUEST HAND SEAMER FOR GANS Filed Sept. 2l, 1953 6 Sheets-Sheet 2Dec. 10, 1935. A. L.. KRONQUEST v HAND SEAMER FOR CANS Filed sept. 21,1933 e sheets-sheet 3 Dec. 1o, 1935. A, KRONQUEST 2,023,598

HAND SEAMER FOR CANS Filed sept. 21, 1933 e sheets-sheet 4 A. l..KRoNQUEsT 2,023,598

HAND SEAMER FOR CANS Filed Sept. 2l, 1933 6 Sheets-Sheet 5 Dec. l0, A. 1KRONQUEST 2,023,598

HAND SEAMER FOR CANS Filed Sept. 2l`, 1933 6 Sheets-Sheet E5 PatentedDec. 10,A 1935 Alfred L. Kronquest, Syracuse, N. Y., assignor toContinental Can Company, Inc., New York, N. Y., a corporation of NewYork Application september'- 21, 1933, seria1Nc.69o,4ss

claims. (ci. 11a-23) 'Ihe invention relates to new and usefulimprovements in a hand seamer for cans.

An object of the invention is to provide a simple form of constructionwhereby a can may be rotated by hand and an endk automatically seamedthereto through the operation of the rotating means.

Another object of the invention is to provide a hand seamer wherein adifferentially operated planetary gear may be utilized for driving theoperating means for the seaming rolls of a hand seamer. y

A still further object of the invention is to provide a hand seamerhaving an actuated gear l 15'- traveling bodily about the axis of thecontrol cam for the seaming rolls with a positive connecting meanswhereby said traveling gear operates said cams, so that they are rotatedin synchronism.

A still further object of the invention is to provide e simple means forpositively lifting the support for the can so as to chuck the can, whichlifting means yieldingly holds said can support ln raised position. l

These and other objects will in part be obvious and will in part behereinafter more fully disclosed.

In the drawings:-

Figure 1 is a view partly in side elevation and 80 partly in sectionshowing a hand seamer embodying the improvements;

Figure 1a is a view of a portion of the machine shown in Fig. 1, withthe can support raised for chucklng the can;

85 Fig. 2 is a plan view of the hand seamer;

Fig. 3 is a sectional view on the line 3-3 of Fig. 4:

Fig. 4 is a'sectional view on the line lof Fig. 2;

Fig. 5 is a sectional view on the line 5-5 of Fig. 2, with the exposedparts of the frame and f the seaming rolls omitted;

Fig. 6 is a sectional view on the line 6--6 of Fig. 2, with the exposedparts of the frame and the seaming rolls omitted;

Fig. 'l is a view partly in vertical section and partly in frontelevation of a modifiedforrn of hand seamer;

Fig. 8 is a plan view of the same with theshaft in section and the crankremoved, and

Fig. 9 is a sectional view on the line @-9 of Fig. 7.

The hand seamer includes a supporting frame which is adapted to beattached to a table. Q3 Mounted in the frame is a rotating shaftcarrying a chuck. This shaft is held from endwise movement by suitablemeans. Located directly beneath the chuck and mounted for rotation onthe frame is a canvsupport. Means is provided for liftingvthe cansupport 'to cause the can to v5 engage the chuck. This lifting meansincludes a yielding element, and is also so constructed as to positivelyhold the support raised. Mounted on the frame at opposite sides thereofare seaming devices, each of which includes a seaming roll, 1o

an arm carrying the seaming roll, and an actuating lever adapted to movethe arm and carrying a roller cooperating with the control cam. Thecontrol camis mounted for free rotation concentric to the axis of theshaft carrying the l.5

chuck. Said control cam is rotated by a gear which is mounted on aneccentric member carried by the shaft. Said gear meshes with an internalgear iixed to the frame. Suitable hand means is provided for rotatingthe shaft, and this will 20 cause the gear mounted thereon to travelbodily on the internal gear so that a differential movement will beimparted to said movable gear. Means is provided for connecting thismovable gear to the control cam, so that the gear will lm- 25 partrotations to the control cam.

Referring more Vin detail to the drawings, the hand seamer comprises arectangular frame consisting of a base member I, standards 2, 2connected to said base member, and a cap plate 3 30 which is secured tothe upper ends of the standards 2, 2. The standards are preferablyprovided with reduced sections which are threaded and which extendthrough the cap plate, and a nut I attached to each standard, securesthe 35 cap plate to said standards. Attached at the base of eachstandard 2 and to the base plate I is a clamping bracket 5. Eachclamping bracket is provided with a clamping screw 6, and this providesa means whereby the frame may be rigidly'attached to a table or othersupport which is indicated at l.

Mounted for rotation in the cap plate 3 is a shaft 8. Said shaft carriesat the lower end 45 thereof a chuck 9.l At the upper end of the shaft isa bevel gear I0 which meshes with a bevel gear Ii carried by the shafti2 to which a crank i3 is attached. Said shaft i2 is iournaled in thebearing extension of the cap plate 3. Said bear- 50 ing extension isindicated at lf3. A cover plate i5 is attached to the cap plate andbearing extension for covering the gears. Said cover plate is providedwith an oil port i@ through which lubricating oil may be supplied to aport li in the shaft and from this port in the shaft through radialports to the bearings for the shaft.

The under face of the cap plate 3 is formed with a recess which isconcentric to the axis of the shaft. Located on the inner face of therecess are gear teeth I8 which form an internal gear, the center ofwhich is the axis of the shaft 8. The shaft 8 is provided with aneccentric sec tion I9. Mounted on this eccentric section I9 is a gear 28which meshes with the internal gear I8. Said gear 28 is caused by therotation of the shaft tol travel bodily on the internal gear, and foreach revolution of the operating shaft, it will be given a portion of arotation about its own axis. When, the shaft 8 has been rotated apredetermined number of times, it will cause o'ne rotation to themovable gear 28, and thus it is that the movable gear is given adifferential movement from the shaft 8 which is rotated by hand.

The can to be seamed is indicated in broken lines at C in the drawings.Said can has a cover loosely applied thereto. 'I'he can is placed on aAcan support 2|. This can support 2I is provided with a depending hub 22which is mounted for free rotation in a supporting member '23. Saidsupporting member has a socket or recess to re- 1 lceive the hub 22. Inthe bottom portion of the" recess is a spring plate 24. 'I'here is acentral bore through the hub and threaded into said bore is a hardenedcylinder 25. Said hardened cylinder has a spherical endwhich rests onthe spring plate 24. Pivoted to the lower portion of the supportingmember is a lever 26. Said lever v28` is mounted on a pivot rod 21 whichis attached to the supporting member. 'I'his supporting member 23 ismounted for vertical movement in a sleeve 28 which is rigidly attachedto the base plate I by bolts 29, 29. 'I'he sleeve 28 is provided with aslot 38 in one wall thereof, and the lever 26 extends through this slot.The lever 26 is provided with a cam face 3|` which leads to a shoulder32. When the parts are in the position y shown in Fig. l, then the cansupport 2| is lowered and a can may be placed thereon. When said leveris depressed to the position shown in Fig. 1a, then the cam face 3i,riding on the supporting base I, will lift the can support carrying thecan and the end mounted thereon into engagement with the chuck. 'Ihus itis that the can is chucked so that the rotating of the chuck will rotatethe can and its support I2I. When the lever 26 is in its depressedposition, the shoulder 32 engagesthe base I, and is so shaped as topositively hold -the support in raised position. The spring plate 24will yield toytake care of any inequalities in the cans. y

'Ihe rst operation seamingroll is indicated at 33. Said roll isjournaled on an arm 34 carried by a sleeve 35. This sleeve 35 is in turnmounted i'or free movement on the left-hand standard 2, as viewed inFig. l4.- A wear plate 38 is mounted onv the standard 2 and rests on ashoulder 31 formed therein, and this sleeve 35 oscillates on this wearplate 36. A spring 38 is attachedv to this arm 34y and to a lug 39, andthis spring operates to move the seaming'roll 33 away from the chuck.Associated with thearin 34 is an operating lever 48. Said operatinglever 48 is-l provided with a hub-4I intermediate itsends, and this hubis journaled on thestandard v2. above the sleeve 35. Mounted on thelever 48 is a roller 42;

'I'his roller 42 cooperatesv with a` face cam. 43- formed on thecamsupporting member orxdiskv 44. The other endof the lever 48 isprovided with l an adjustable abutment screw 45 which is adapted toengage the outer face of the arm 34. This limits the outward movement ofthe arm 34 through the action of the spring 38 thereon. The abutmentscrew 45 serves as a means for forcing 5 the seaming roll into contactwith the can parts, and it is adjustable for varying the tightness ofthe seam and also for positioning the seaming roll for operation oncontainers of different diameters. Also mounted in the end of the lever48 is a compression spring 46 which bears against a shoulder 41 on thecap plate. This spring normally turns the lever 48 in a counterclockwisedirection as viewed in Figs. 2 and 3, thus causing the roller 42 tocontact with the control cam 43 therefor.

The second operation seaming roll is indicated at 48. Said seaming rollis carried by an arm 49 journaled on the right-hand standard 2, asviewed inv Fig. 4. A spring 58 operating on the arm 49 moves the roller48 away from the chuck. Associated with this arm 49 is a lever 5I whichis likewise journaled on the standard 2. Said lever 5I carries a roller52 which cooperates with a cam face 53 formed on the cam supporting 25member 44. There is an adjustable abutment screw 54 carried at the outerend of the lever 5I and also a compression spring 55 which operates tomove the lever 5I so as to hold the roller 52 in contact with thiscontrol cam.

The cam supporting member 44 is mountedfor free rotation Aon the lowercap plate 56. This cap pf plate is attached to the cap plate 3 bysuitable clamping bolts 51, 51 (see Fig. 4). 'I'he shaft 8 extendsthrough this lower cap plate and is jour- 35 naled therein. The chuck issecured to the shaft just beneath the low'er cap plate 56. This lowercap plate has a hub 58 on its inner face, and the cam supporting member44 is mounted for rotation on this hub 58. This cam supporting mem- 40.

ber is concentric to the shaft and rotates about. the center of theshaft. Said cam supporting member is 4rotated in synchronism and timingvwith the traveling gear 28.

The cam supporting Amember 44 is` provided 4a with a-series of recesses53 which are similar in cross section. The centers of these recesses areAconcentric to the axis about which the. cam supbetween the operatinggear and the cam member,

that is, the distance the center of the traveling 80 gear is oil'setfrom the center of the actuating shaft.

After the can is chucked, then the shaft 3 is rotated through the handcrank I3. As this shaft is rotated, it will cause the gear to travelbodily on the internal gear and this will'impart a certain angularmovement or fraction of rotation to the gear 28 for each rotation of theshaft 8, or each rotation of the can.A The connecting pins willpositively impart the rotating'move# 'lo4 mentgiven to the gear' 28through the turning ofthe crank to the control cam supporting member-44. These two parts rotate about diiTerent centers, but theyrotate in'timing and synchronism through this 'pin and recess connection join- 75Gol `basic principles which are described above.

ing the parts. The 'pinsfwilL of course, .shift in the recesses as themovable gear changes its angular position about the center oftheinternal gear, but there will always be a positive connection impartingthe movements of one to the other. This will give to the control cam aproper number of rotations for actuating the seaming levers and theseaming rolls controlled thereby. The control cam 43 for the rstoperation seaming roll 33 is provided with a depression 6I. 'Ihe controlcam 53 operating on the seaming 'lever associated with the secondoperation seaming roll 48. is likewise provided with a depression 62.The depressions 6| and 62 are brought opposite the rollers 42 and 52,respectively, at the same time, and when in this position, the seaming-rolls are moved to their extreme position away from the chuck. Saidrolls are entirely free .from the chuck, and at this time the can can beraised into engagement with the chuck ready for the seaming operation.

'I'he cam supporting member 44 rotates in a counterclockwse direction,as viewed in Fig. 3,l and as indicated by the arrow thereon. Afterthecan is chucked, then the shaft 8 is rotated. 'Ihe cam 43 will move theroller 42 outward, thus bringing the seaming roll 33 in close to theflanges which are to be formed into a double seam. This cam face 43 fromthe point a to the point b is gradually increasing in radius so that theroller 42 is gradually moved outward, and the seaming roll forced inwardto complete the first seaming operation. This inward movement of thefirst operation roll continues for a little less than 180 degreesymovement of vthe cam 43. Meanthe seaming roll 33 will be moved out ofcontact With the seam andretained in an idle position until it againmoves into the depression 3| so that it is entirely free of the chuckand the can seam ready for receiving another can. The control cam 53from the point cto the point d is substantially concentric so that whenthis camis turningthrough a distance slightly less than'iBO degrees, thesecond operationseaming roll 48 will be moved inward to a slight extent,but retained in an idle position until after the rst seaming operationhas been performed. From the point d to the point e, the cam 53 iscurved outwardly so that the-second operation seaming roll is forcedinto contact with the metal for completing the seaming operation andwill be held with a very gradually increasing: pressure as said controlcam 53 continues its rotation, until finally the roller `52 moves intothe depression 62 and this will release the second operation seamingroll from contact with the chuck and the seam to permit the can to beremoved from the chuck and replaced by anotherbcan for another seamingoperation. i.,

In Figures 7 to 9, there is shown a slightly modified form orconstruction embodying the broad In this form of the invention, there isa supporting frame which includes standards 2a 2a having a base memberla formed integral therewith. Attached to the base plate are clampingbrackets la, 5a for securing the frame to the table which is` indicatedat 1a. Mounted at the upper ends of the standards is a cap plate 3a, andjournaled in this-cap plate is a shaft 8a to which is attached a crankI3a. Mounted at the lower end I of the shaft 8a is a chuck 9a. Mountedon the l 1 supporting frame is a can support 2 Ia. 'I'his'can suppportis carried by a-hub portion 22a which i is mounted in a supportingmember 23a-,and this supporting member-is in'turn mountedv in asleeve5.1'-

28a attached to the'supportingbase member la by suitable clamping bolts.The cap plate 3a 'is' provided with a recess havingl gear teeth Isaforming an integral gear 'similar to'that'above described. Located inthis recess is a bodily trav- 1o has an upwardly extending sleevebearing 58a 20V on which is mounted for rotation a camsupporting member44a. 'Ihis cam supporting inem-l ber 44a is provided with a cam 43a.with which the roller 52a cooperates. This roller is carried by aseaming lever which controls the seaming 25 roll 48a. 'Ihere is also aface cam 53a on this cam supporting member 44a which cooperates with aroller 42a carried by the seaming lever which controls the seaming roll33a. 'Ihese seaming levers and the connections for operating the sameare similar to those described above in detail. and further descriptionthereof` is not thought necessary. f l v The principal feature ofdifference between this modified form of construction andl that showninf 1 Figures l to 6, resides in the manner of operating vthe camsupporting memberfrom the traveling gear 20a. 'I'he cam supportingmember 44a is provided with a radial recess 63 having parallel walls.Mounted to slide freely in this radial re- 40 cess is a block 64 whichis carriedby a pin 65 fixed to the traveling gear 20a. This Din 65 willtravel concentrically about the axis of the travel'- ing gear 20a. Itspath of trave, however, is eccentric to the axis of rotation of the camsupporting member 44a. The block will slide radially in this groovegtopermit these parts to rotate about dierent` centers, and at lthe vsametime, the rotating traveling gear will impart synchronizing rotations tothe cam supporting memher 44a.

It is obvious that changes can be made in the details of constructionand the arrangement of the parts without departing from the spirit ofthe invention as set forth in the appended claims.

Having thus described the invention, what I claim as new and desire tosecure by Letters Patent isl. A hand seamer for cans comprising av:supporting frame, a shaft mounted therein for rotation, a chuckcarried by said shaft, a stationary internal gear concentric to saidshaft. a

`rotatable gear mounted within said internalgear and meshing therewith,means operated by said shaft for causing said gear to travel bodily onsaid internal gear, seaming rolls, seaming levers movable about fixedcenters for operating said rolls, a member mounted for free rotationabout the axis of the shaft. cams carried by said member for actuatingsaid seaming levers, and means connecting said traveling gear to saidcam supporting member whereby said member is caused to partake of therotating movements of said gear. Y 2. A hand seamer for cans comprisinga sup- I' porting frame, a shaft mounted therein for rotation, a chuckcarried by said shaft, a stationary internal gear concentric to saidshaft, a rotatable gear mounted within said internal gear and meshingtherewith, means operated by' said shaft for causing said vgear totravel bodilyon said internal gear, seaming rolls, seaming leversmovable about xed centers for operating said rolls, a member mounted forfree rotation about the axis of the shaft, camsl carried by said memberfor actuating said seaming levers, and means connecting said travelinggear to said cam supporting member whereby said member is caused topartake of the rotating movements of said gear, said last-named meansincluding a driving pin fixed by one of said parts and extending into arecess formed in the other part.

3. A hand seamer for cans comprising a supporting frame, a shaft mountedtherein for rotation, a chuck carried by said shaft, a stationaryinternal gear concentric to said shaft, a rotatable gear mounted withinsaid internal gear and meshing therewith, an eccentric member carried bysaid shaft for Vrotatably supporting and causing said gear to travelbodily on said inter-A nal gear, seaming rolls, seaming levers movableabout xed centers for operating said rolls, a member mounted for freerotation about the axis of the shaft, cams carried by said member foractuating said seaming levers, and means connecting said traveling gearto said cam supporting member whereby said member is caused to partakeof the rotating movements of said gear, said last-named means includinga plurality of driving pins each extending into a recess formed in theother part.

4. A hand seamer for cans comprising a supporting frame, a shaft mountedtherein for rotation, a chuck carried by said shaft, a stationaryinternal gear concentric to said shaft, a rotatable gear mounted withinsaid internal gear and meshing therewith, means operated by said shaftfor causing said gear to travel bodily on said internal gear, seamingrolls, seaming levers movable about fixed centersfor operating saidrolls, a member mounted for free rotation about the axis of the shaft,cams carried by said member for actuating said seaming levers, and meansconnecting said traveling gear to said cam supporting member wherebysaid member is caused to partake of the rotating movements of said gear,said last-namedmeans including a plurality of driving pins eachextending into a recess formed in the other part, said recesses beingofsuch diameter as to permit the driving pins to contact with the walls ofthe recesses at all times during the rotation of the parts.

.5. A hand seamer for cans comprising a supporting frame, a shaftmounted therein for rotation, a chuck carried by said shaft, astationary internal gear concentric to said shaft, a rotatable gearmounted within said internal gear and meshing therewith, an eccentricmember carriedl by said shaft for rotatably supporting and causing saidgear to travel bodily on said internal gear, seaming rolls, seaminglevers movable about fixed centers for operating said rolls, a membermounted for free rotation about the axis of the shaft, cams carried bysaid member for actuating said seaming levers, and means connecting saidtraveling gear to said cam supporting member whereby said member iscaused to partake of the rotating movements of said gear, saidlast-named means including a plurality of pins fixed to said gear, eachof which engages a recess in the cam supporting member, said recesseslbeing circular and of a diameter equal tothe pin plus twice theeccentricity of the gear as to permit the pins to contact with the wallsof the recesses continuously for imparting a pos- 5 able gear mountedwithin said internal gear and meshing therewith, means operated by saidshaft for causing said gear to travel bodily on said internal gear,seaming rolls, seaming levers movable about fixed centers for operatingsaid rolls, a member mounted for free rotation about the axis of theshaft, cams carried by said member for actuating said seaming levers,and means connecting said traveling gear to said cam supporting memberwhereby said member is caused to partake of the rotating movements ofsaid gear, said cam supporting member having a raidally extending grooveformed therein, a block slidable in said groove, and a pin carried bysaid gear and extending into said block for imparting through said blockrotations to said cam supporting member.

7. A hand seamer for cans comprising a supporting frame includingstandards spaced from each other, a base plate connecting saidstandards, a cap plate joining the upper ends of said standards, a shaftmounted in said cap plate for rotation about a vertical axis, a chuckcarried by said shaft, a can support rotatably supported by the baseplate, means whereby the can support may be raised to cause a can toengage the chuck, seaming rolls, seaming levers for actuating theseaming rolls, said levers being mounted for oscillation, respectively,about the standards, an actuating cam cooperating with said seaminglevers and mounted for independent rotation about the axis of saidshaft, means for imparting to said cam a differential rotation from saidvertical shaft, and hand means for rotating said vertical shaft.

8. A hand seamer for cans comprising a supporting frame includingstandards spaced from each other, a base plate connecting saidstandards, a cap plate joining vthe upper ends of said standards, ashaft mounted in said cap plate for rotation about a vertical axis, achuck carried by said shaft, a can support rotatably supported by thebase plate, means whereby the can support may be raised to cause a canto engage the chuck, seaming rolls, seaming levers for actuating theseaming rolls, said levers being mounted for oscillation, respectively,about the standards, an actuating cam cooperating with said seaminglevers and mounted for independent rotation about the axis of saidshaft, means for imparting to said cam a dierential rotation from saidvertical shaft, and hand means for rotating said vertical shaft, saidmeans for raising the can support including a yieldable member on whichsaid can support rests. e5

9. A hand seamer for cans comprising a supporting frame includingstandards spaced from each other, a base plate connecting saidstandards, a cap plate joining the upper ends of said standards, a shaftmounted in said cap plate for rotation about a vertical axis, a chuckcarried by said shaft, a can support rotatably supported by the baseplate, means whereby the can support may be raised to cause a can toengage the chuck, seaming rolls, seaming levers for actuating theseaming rolls, said levers being mounted for oscillation, respectively,about the standards, an actuating cam cooperating with said seaminglevers and mounted for independent rotation about the axis of saidshaft, means for imparting to said cam a differential rotation from saidvertical shaft, hand means for rotating said vertical shaft, said meansfor raising the can support including a supporting member on which saidcan support is rotatably mounted, a lever pivoted to said supportingmember, and means carried by the frame for guiding said supportingmember, said lever having a cam face adapted to engage a frame forforcing the can supporta upwardly when said lever is lowered. 10. A handseamer for cans comprising a supporting frame including standards spacedfrom each other, a base plate connecting said standards, a cap platejoining the upper ends of said standards, a shaft mounted in said capplate for rotation about a vertical axis, a chuck carried by said shaft,a can support rotatably supported by the base plate, means whereby thecan support may be raised to cause a can to engage the chuck, seamingrolls, seaming levers for actuating the seaming rolls, said levers beingmounted for oscillation, respectively, about the standards, an actuatingcam cooperating with said seaming levers and mounted for independentrotation about the axis of said shaft, means for imparting to said cam adifferential rotation from said vertical shaft, hand means for rotatingsaid vertical shaft, said ymeans for raising the can support including asupporting member on which said can support is rotatably mounted, ,alever pivoted to said supporting member, and means carried by the framefor guiding said supporting member, said lever having a cam face adaptedto engage a frame for forcing the can support upwardly when said lever`is lowered, said lever terminating in a shoulder adapted to engage theframe and retain said lever in a position for holding said can supportraised.1

11. A hand seamer for cans comprising a supporting frame, a shaftmountedtherein for rota-v tion about a vertical axis, hand means forrotatingthe shaft, a chuck carried by said shaft, a can support mountedfor rotation on said supporting frame beneath said chuck, seaming rolls,independent actuating devices for said seaming rolls, a control camy foreach'of said devices, said control cams being mounted for rotation aboutthe axis of said shaft, and means for imparting from said shaft to saidcontrol cams a differential movement relative to said shaft.

12. A hand seamer for cans comprising a supporting frame, a shaftmounted therein for rotation about a vertical axis, hand means forrotating the shaft, a chuck carried by said shaft, a can support mountedfor rotation on said supporting frame beneath saidchuck, seaming rolls,independent actuating devices for said seaming rolls, a control cam foreach of said devices, said ber for raising and lowering the same.

control cams being mounted for rotation about the axis of said shaft,and means for imparting from said shaft to said control cams adifferential movement relative to said shaft, means for raising said cansupport including a supporting mem`- 5 ber on which said supportrotates, a yielding member mounted in said supporting member on whichsaid can support rests, and a vertically moving lever connected to saidsupporting mem.-

l0 f 13. A hand seamer for cans comprising a sup'- porting frame, ashaft mounted therein for rotation about a vertical axis, hand means forrotating the shaft, a chuck carried by said shaft, a can support mountedfor' rotation on said sup- 15 porting frame beneath said chuck, seamingrolls,

' independent actuating devices for said seaming rolls, a control camfor each of said devices, said control cams being mounted for rotationabout the axis of said shaft, and means for imparting 20 from said shaftto said control cams a differential movement relative to said shaft,means for rais-- ing said can support including a supporting member onwhich said support rotates, a yielding member mounted in said supportingmember on 25 which said can support rests, an actuating sleeve carriedby said frame in which said supporting memberis mounted,l a leverpivoted to said supporting member and having a cam face adapted toengage said frame for raising said supporting .30 member for chuckingthe can, said cam face terminating in a shoulder adapted to retain saidsupport in raised position.

14. A hand seamer for cans comprising a supporting frame, includingspaced standards, a cap 35 plate joining said standard, a shaftjournaled in said cap plate for rotation about a vertical axis,

a chuck carried by said shaft, seaming rolls, an arm supporting eachseaming roll, said arms being mounted for oscillation, respectively, onsaid 40 standards, an actuating lever for each arm 'mounted foroscillation, respectively, on said standards, a cam member actuated bysaid shaft for operating said seaming levers, a spring/for each varm formoving the seaming `roll outward away from the chuck, and an abutmentcarried by each lever for engaging its associated arm supporting theseaming roll.

15. A hand seamer for cans comprising a supporting frame, a shaftmounted therein for rotation about a vertical axis, a chuck carried bysaid shaft, a beveled gear attached to the upper end of said shaft, .ahorizontal shaft mounted in said frame having a bevel gear meshing withsaid first-named bevel gear, a crank for rotating I said horizontalshaft, seaming rolls, an actuating lever for each seaming roll, acontrol cam for operating each lever mounted for independent rotationabout the axis of said vertical shaft, and means actuated by saidvertical shaft for im- 00 parting to said control cams a. diierentialmovement relative to said vertical shaft.'

ALFRED L. KRONQUEST.

